Flexibility and energy storage: The key to modern Czech energy in 2025

Why is flexibility important right now?

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With the increase of photovoltaics and other renewable energy sources, there are also more and more moments when we have too much electricity - or, conversely, little. It used to be handled by coal-fired power plants, but today more modern ways are being sought. equalize the differences between production and energy consumption in real time.

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“The best cost-optimized building will be the one who not only consumes and produces energy, but can also manage it flexibly,”
says Ivan Korolov from PKV.

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And this is where accumulation plays a key role — storing surplus energy for later.

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Batteries: more than just a 'storage of energy'

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Battery systems today are not just an addition to photovoltaics. They become an active element in the management of the entire energy sector. What can he do?

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• Save Surpluses for example, from your photovoltaics or pinwheel and utilize them when the sun isn't shining or the wind isn't blowing.
• Align the tips at the time of greatest load.
• ‍Provide power balance services and help stabilize the network -- for a reward.
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In addition, thanks to the amendment of the Act Lex OZE 3, you can also share the energy stored in a separate battery storage — without the need to have a building. This opens the door to entirely new business models.

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Inspiration from practice: 68% savings thanks to smart battery usage

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One of the practical examples that Ivan Korolov talked about at Breakfast with PKV is a project implemented in a company that is engaged in food storage. The company decided to invest in 300 kWp photovoltaics and large capacity battery almost 1 MW. The primary objective was to ensure backup power source — in the event of an outage, the stored goods would be depreciated. At the same time, the company wanted to reduce its dependence on expensive deliveries from the network and optimize costs.

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The result? Saving 68% of energy consumption, which is a very significant decline within an industrial object. The total investment reached CZK 17 million, while thanks to a subsidy from the Modernization Fund, the company covered only 10.2 million from its own resources. Return on investment comes to 8.5 yearsand if the company starts using the battery for power balance services (such as arbitrage or support for network stability), can be shortened to about 6.5 years.

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This example shows well that Batteries are no longer just a backup system — combined with photovoltaics and smart power management, they can be very interesting economically and bring concrete savings. What's more — it is a step towards making the company an active player in the energy sector, not just a passive participant in it.

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What awaits us in 2025?

1. More subsidies, more batteries

Subsidy Titles ze State Fund and Modernization Fund They also cover accumulation. For some projects, support can reach up to 50%. This fundamentally increases the economics of investment for both companies and public organizations.

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2. Investing in strengthening the network

The distribution network is not yet keeping up with the pace of change. Connecting new renewable energy sources or batteries often runs into infrastructure limits. Therefore, it will be crucial investing in strengthening the network, smart management and engagement flexibility.

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3. Flexibility as a Service

Companies and municipalities will start using their batteries not only for their own use, but also as a service. Arbitration (buy cheaply - sell expensive), equalization services or power sharing will thus become the new standard.

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Flexibility is not just technology. It is also an approach

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Beyond batteries, flexibility is also about behavior. For example, power management according to the current price or making predictions to optimize energy use. In the future, it will no longer be uncommon for companies to adjust their operating mode based on when energy is cheap.

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“The biggest savings come not just by installing technology, but by using it wisely,”
reminds Korolov.

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Conclusion

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Flexibility and accumulation are not buzzwords — they are concrete tools to help manage the transition to sustainable, decentralized energy. In 2025, they will become the norm.

And whoever starts with them on time will get not only savings, but also a head start.